This 720 Magnetic Micro Coreless Motor is a very compact and lightweight DC motor nicely crafted for perfectly matching with your small 100mm like multirotor frames. They are rated at 48000 RPM which is more than needed to lift and push your drone to the target. These are less noisy with low resistance. The only drawback of using coreless is the amount of torque they provide, as they are High Speed and Low Torque motors.